| COM Recommendation (EU) 2021/2279 Annex II Part A. Requirements to develop PEFCRs and perform PEF studies in compliance with an existing PEFCR | | Undefined |
| Environmental Footprint 3.1 | Compliance systems | Software or database |
| ILCD Data Network - compliance (non-Process) | Compliance systems | Monograph |
| ILCD Data Network - Entry-level | Compliance systems | Monograph |
| ILCD Data Network compliance (draft) | Compliance systems | Other unpublished and grey literature |
| ILCD format | Data set formats | Other unpublished and grey literature |
| ISO 14040 Environmental Management – Life Cycle Assessment – Principles and Framework, 2006 | Other source types | Undefined |
| ISO 14044:2006. Environmental Management – Life Cycle Assessment – Requirements and guidelines. | Other source types | Monograph |
| PEF guide (2013/179/EU) | Publications and communications | Undefined |
| PEFCR guidance 6.3 | | Undefined |